Lubricating system for explosion-engines.



WITNESSES:

G. W. DUNHAM.

LUBRICATING SYSTEM FOR EXPLOSION ENGINES.

APPLICATION FILED AUG.26. I914.

Patented Apr. 20, 1915.

2 SHEETS-SHEET 1.

ri l/P m A TTOR/VE V G. W. DUNHAM.

LUBRICATING SYSTEM FOR EXPLOSION ENGINES.

APPLICATION FILED Aue.26. 1914.

1,136,219. Patented Apr. 20,1915.

2 SHEETS-SHEBT 2.

WITNESSES: IN [/5 /V 70/? A TTOR/VEV eras P AEN;

GEORGE w; DUNHAM, or DETROIT,- MICHIGAN, ASSIGNOR TO cHALMEns Mo'rdit COMPANY, or DETROIT, MICHIGAN, A ooEPoEA'rIoN or MICHIGAN.

LUBRICATING SYSTEM "FOR EXPLOSIONEENGINES.

To allwhom it may concern:

a citizen of the United States of America,

residing at Detroit, in the county of Wayne lar. reference to the means employed for cooling the lubricant so as to best lubricating-qualities.

A further feature of the invention is the peculiar construction and arrangement of the various elements'to be lubricated as hereinafter set forth.

Inthe drawings iFigure 1 is a cross section through an engine to which my impreserve the i provements are applied; Fig. 2 is' a plan view thereof; and

in the chamber G through the cam shaft 1,

Fig. 3 is a sectional side elevation. v s

A is a cylinder of an explosion engine, B the piston, ,C the pitman' rod, D the crank case and E. the ported head of the cylin-- der having valves F with iipwardly-extending stems.

G is a chamber in the upper portion of the head E for containing thevalve-operating mechanism, said chamber being separated from 'the cylinder preferably by a water jacket H which surrounds the-ports.

otally connected to brackets K and at'their outer ends engaging the valve stems.

For lubricating the valve-actuating mechanism the lubricant is preferably introduced which is'hollow or provided witha longi tudinal oil passage 1 therein. This-passage is connected by cross ports I with the various bearings to belirbricated and also to the cams which engage thev rockers J. The lubricant thus distributed; in passing off from the bearings will collect in the' bot;

tom of the chamber G above the water jacket E, from which it may. be conducted through a conduit L to the crank case D for lubricating the parts thereinlby the usual splash'lsystem Eventually the lubricant collects in the pan M in the bottom :of the crank case and may bereturned by a Specification of Letters Patent.

- 0 suitable pump Be it known that I, GEORGE W. DUNHAM, I

I is a cam shaft for actuating'the valves through the medium of rocker arinstJ piv-;

Patented Apr. 20,1915.

Application filed August 26, 1914. Serial No. 858,741."

(not shown). to the channel in the cam shaf The oil collecting in the chamber G above the water j cket.wi-ll become quite highly heated through contact with the latter. As

,this would interfere with its efficiency as a lubricant, I have provided means for cooling the oil drawn 03 from the chamber G.

beforeit is introduced into the crank case D As shown, the conduit L is provided with a radiating coil L which may be either air cooled or water jacketed, as indicated 1 at N. The cooling eflect is sufficient to reduce the temperature of the oil passing therethrough, so that when delivered into the crank caseit is at asuitable temperature. Thusthe efliciency of the lubricant is maintained, and the same oil maybe used for lubricating the valve mechanism and the parts within the crankcase.

What I claim as my invention is L- In an explosion engine, a lubricating 7 system including a receptacle exposed to the heat of the engine, and means for cooling the lubricant fed from said receptacle to the mechanism to be lubricated. 2. In'an [explosion engine, the combination with a lubricant receptacle exposed to the heat of the engine, of a conduit for feed- ..ing the lubricant from said receptacle to the mechanism to in said conduit.

3. In --.aI 1' explosion engine, the combinabe lubricated, anda cooler tion with valve mechanism arranged in the head of the engine and exposed to the heat thereof,'of a crank case, means for feeding' 1 lubricant to said valve mechanism and from the latter to said crank .case, and means for cooling ,the lubricant intermediate said valve mechanism and crank case. c

4.'In .an explosion engine, the comb nation with a valve housing-arranged above the head'of the engine cylinder, of a cam ShaftKfil' Sai'd housing, mechanism operated by said cam shaft for actuating the valve, an oil passage formed in said cam shaft] having distributing ports for the various bearings of said mechanism," and a conduit forconveying the lubricant collecting said housing po the crank case.

5.- In an explosion engine, the combination' with a cylinder'head having a-chamber therein for the valve'mechanism, of a cam shaft extending through said chamber,

mechanism operated by said cam shaft for actuating said valves, a lubricant channel extending through said cam shaft having distributing passages for the various bearings of said mechanism a conduit for conmechanism arranged therein,'o'f means for feeding lubricant to said valve mechanism,

means for' feeding the lubricant from said housing to the crank case,- and a cooler for the lubricant between said housing and crankcase.

in presence of two witnesses.

therein exposed to the'heat of said engine, of

a crank case, means for feeding lubricant to 'Sflld valve mechanism, and a COIldllltbG- tween said valve housing and crank case for conducting the lubricant collecting in said' housing to said crank case, a portion of said conduit being coiled.

In testimony whereof I afiix my signature GEO. W. DUNHAM; Witnesses:

Enos R. JAooBY, C. E. GREGORY. 

